Cable-saw machine

ABSTRACT

The present invention pertains to a cable saw ( 1 ) with a frame ( 2 ), a motor drive ( 7 ) and a driven cable storage unit ( 6 ) for the sawing cable ( 3 ) moved in a circulating manner. The drive ( 7 ) has a plurality of adjacent drive wheels ( 11, 12 ), around which the sawing cable is wound and which together are driven by a motor ( 8 ). The motor ( 8 ) and optionally an interposed gear ( 9 ) are removable by means of a change-over coupling ( 10 ). In addition, the cable saw ( 1 ) can be broken down into at least three basic components, namely, a main roller head ( 34 ), a frame unit ( 35 ), and a motor unit ( 36 ).

FIELD OF THE INVENTION

The present invention pertains to a cable saw with a frame, a motordrive and at least one drive wheel as well as a cable storage unit for acirculatingly driven sawing cable.

BACKGROUND OF THE INVENTION

Such a cable saw has been known from WO 95/18692 or the parallel EP-BI 0738 194. It comprises a frame, a motor drive and an integrated cablestorage unit for an individual endless and circulatingly driven sawingcable. The sawing cable leaving the cable saw is led in a single looparound the workpiece and back again into the cable saw. The drive has amotor and an individual drive wheel, around which the sawing cable iswound. The sawing cable is tensioned by the cable storage unitfunctioning according to the principle of the pulley block with at leastone stationary deflecting roller and a plurality of movable deflectingrollers corresponding to the progressing depth of cut on the workpiece,while the length of cable becoming free is taken up and stored. Theremay be problems in this arrangement with the reliability of operationand the stability of the cable saw and the sawing cable.

A wire saw, with which a rod-like tool is cut into a plurality of disksin one operation, has been known from JP-A 61 182 759. The finite wireis fed in for this from a wire reserve and clamped in the wire saw on aplurality of deflecting rollers in the form of a triangle. The wire iswound several times over the deflecting rollers, as a result of which aplurality of parallel wire strands, which make it possible to cut off aplurality of disk-shaped workpieces simultaneously, are obtained in theclamping and cutting area. The three deflecting rollers are driventogether by a motor and are coupled with one another by means of atoothed belt gear.

SUMMARY AND OBJECTS OF THE INVENTION

The object of the present invention is therefore to provide a bettercable saw.

According to the invention, a cable saw is provided with a frame, amotor drive and at least one drive wheel as well as a cable storage unitfor a circulatingly driven sawing cable. The drive has a plurality ofadjacent drive wheels over which the sawing cable is wound, The adjacentdrive wheels are driven together by a motor.

The drive according to the present invention ensures high reliability ofoperation and stability of the cable saw and the sawing cable. Thesawing cable is safely guided on a plurality of drive wheels, and thedriving energy is transmitted to the sawing cable essentially withoutslip and wear. The drive makes do with a single motor, which optionallydrives the drive wheels through an interposed transmission at equalspeed. This arrangement is particularly economical and reduces thedesign effort and the space requirement. In addition, the control issimplified.

An especially economical and inexpensive design is obtained if the drivemotor is arranged detachably at the cable saw via a suitable change-overcoupling. The use of a plug-in quick coupling offers the advantage thatrapid replacement and standardization of the interface between differentmachines are possible. As a result, the motor can be used alone oroptionally in connection with the transmission, at different toolmachines. The cable saw and other tool machines can thus be designed asinexpensive, driveless skeleton machines, which are then complementedwith the motor and optionally the transmission when needed. It isadvantageous in this connection for the drive motor to be designed as anelectric motor.

The drive according to the present invention also offers specialadvantages in conjunction with the cable storage unit. This has aplurality of stationary and movable deflecting rollers. The use ofdouble rollers with two grooves has the advantage that greatly differentcable arrangements are possible. As a result, the capacity of thestorage unit can be varied as desired. The space requirement and thedesign effort are minimized at the same time. The cable saw is notenlarged despite the great range of variation.

The roller arrangement according to the present invention as well as thespecial design of the cable inlet and outlet with oblique position andlateral offset offers improved guiding and kinematics for the sawingcable.

The cable saw can be advantageously broken down into at least threebasic components, namely, a frame unit, a main roller head, and a motorunit, which may optionally also be designed as a more comprehensivedrive unit including the drive wheels. The transport and the handling ofthe cable saw can be simplified and facilitated by these three or morebasic components. Due to the lower weight, the individual components, inparticular, can be transported and erected and mounted at the work sitemore easily. In addition, the space requirement of the cable saw takenapart is reduced.

Additional advantageous embodiments of the present invention aredescribed in the subclaims.

The various features of novelty which characterize the invention arepointed out with particularity in the claims annexed to and forming apart of this disclosure. For a better understanding of the invention,its operating advantages and specific objects attained by its uses,reference is made to the accompanying drawings and descriptive matter inwhich preferred embodiments of the invention are illustrated.

BRIEF DESCRIPTION OF THE DRAWINGS

In the drawings:

FIG. 1 is a side view of a cable saw;

FIG. 2 is a top view of the arrangement according to FIG. 1;

FIG. 3 is a front view of the arrangement according to FIGS. 1 and 2;

FIG. 4 is a view showing one of different possibilities of arranging thecable for the cable saw according to FIGS. 1 through 3;

FIG. 4 is a view showing one of different possibilities of arranging thecable for the cable saw according to FIGS. 1 through 3;

FIG. 5 is a view showing one of different possibilities of arranging thecable for the cable saw according to FIGS. 1 through 3;

FIG. 6 is a view showing one of different possibilities of arranging thecable for the cable saw according to FIGS. 1 through 3;

FIG. 7 is a view showing one of different possibilities of arranging thecable for the cable saw according to FIGS. 1 through 3;

FIG. 8 is a side view of a variant of a cable saw;

FIG. 9 is an exploded view of a variant of the cable saw;

FIG. 10 is a perspective view of another variant of the cable sawaccording to FIG. 9 from behind;

FIG. 11 is a side view showing an attachment position of the cable saw;

FIG. 12 is a side view showing an attachment position of the cable saw;and

FIG. 13 is a top view showing an attachment position of the cable saw.

DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to the drawings in particular, FIGS. 1 through 3 show a sideview, a top view and a front view, respectively, of a cable saw 1. FIG.8 shows a side view of a variant of the cable saw 1. FIGS. 9 and 10 showother variants in an exploded view and in a perspective view.

As is illustrated in FIGS. 11 through 13, the cable saw 1 is used to sawupright walls, horizontal floors or other workpieces 31 of anyorientation consisting of stone, concrete, brickwork or the like, and ithas an endless and circulatingly driven, flexible sawing cable 3 withsuitable abrasive grinding or cutting elements on its circumference,e.g., diamond sections. The cable saw 1 is positioned at a spacedlocation from the workpiece 31 and drives the sawing cable 3circulatingly. The sawing cable 3 exits from the cable saw 1 at a cableoutlet 5, is guided in a suitable manner around the workpiece 31 andoptionally around one or more cable deflecting means 32, 33 in front ofand/or behind the workpiece 31 and returns into the cable saw 1 at acable inlet 4. The circulatingly moved sawing cable 3 is pressed againstthe workpiece 31 in the process and cuts into the workpiece 31 due tothe pressing pressure. FIGS. 11 and 12 show the progression of sawing onthe example of an upright wall 31 in a side view. FIG. 13 shows a topview of the working position.

The cable saw 1 may be arranged at the workpiece in various workingpositions and may optionally have one or more of the above-mentionedadditional external cable deflecting means 32, 33. Depending on thefield of use, it may be designed as a wall saw, a circular cable saw, aplunging cable saw, a tilting pipe cutter or the like.

In the exemplary embodiments shown, the cable saw 1 has a frame 2, whichaccommodates a drive 7 and a movable and driven cable storage unit 6 forthe sawing cable 3. The cable storage unit 6 accommodates an increasingamount of free cable length as the depth of cut increases and tensionsthe sawing cable 3. FIGS. 11 and 12 show this arrangement.

The drive 7 for the sawing cable 3 comprises a motor 8, which optionallydrives two or more drive wheels 11, 12 with the interposition of atransmission 9 and a change-over coupling 10. The sawing cable 3 iswound around two drive wheels 11, 12 and is driven in a circulatingmanner.

In the exemplary embodiment according to FIG. 1, the drive wheels 11, 12are arranged coaxially one on top of another and rotate in the samedirection and at equal speed. In the embodiment according to FIG. 8, thetwo drive wheels 11, 12 are arranged with parallel roller axes 26 nextto one another at spaced locations and essentially at the same level.They rotate at equal speed and in opposite directions.

In FIGS. 1 through 3, the drive wheels 11, 12 may be attached to acommon axis 26 as individual wheels. As an alternative, the drive wheelmay be a one-piece double wheel with two guide grooves. The roller anddrive axis 26 extends essentially in parallel to the substrate and, inthe normal, upright arrangement of the device, essentially horizontally.

The motor 8 may have any desired design. In the preferred exemplaryembodiment, it is an electric motor, especially an a.c. motor orthree-phase motor. This motor may be controlled and optionally regulatedin a suitable manner by phase control or frequency control.

In the embodiments shown, a reducing gear 9, which may optionally alsobe eliminated if the motor is selected correspondingly, at least in theembodiment according to FIG. 1, is arranged between the motor 8 and thedrive wheels 11, 12. This is preferably a toothed gearing. In a variantaccording to FIG. 8, a common gear 9 is provided for both drive wheels11, 12 with a corresponding reversing stage for changing the directionof rotation. In addition, a suitable synchronizing unit may be present,which ensures the uniform speed despite the wheels rotating in oppositedirections and compensates clearance and tolerances in the gear.

The drive 7 may have the above-mentioned change-over coupling 10, whichmakes possible the change-over of the motor 8 alone or together with thegear 9 depending on the arrangement. As an alternative, a doublechange-over coupling may be present, which is located between the motor8 and the gear 9 as well as between the gear 9 and the drive wheels 11,12. The change-over coupling 10 is preferably designed as a quickcoupling, which is equipped, e.g., with a plug insert. The motor shaftmay be designed, e.g., as a spline shaft and can be plugged into acorresponding mount at the gear 9 or at the drive wheels 11, 12. Thepower supply and the control may also be changed with the motor 8.

At least one compensating roller 13 is arranged adjacent to the drivewheels 11, 12 in the embodiment according to FIGS. 1 through 3. Thiscompensating roller is preferably located in front of the drive wheels11, 12 in the longitudinal direction 18 of the saw. The compensatingroller 13 preferably has a roller axis 14 aligned in parallel to thedrive roller axis 26 and a corresponding roller shape. As analternative, the compensating roller 13 may also have an oblique rolleraxis 14 or an oblique bearing compare FIGS. 1 and 2. The obliqueposition is present, e.g., essentially in the vertical plane downward orupward. Due to the oblique position, the sawing cable 3 is guided fromone drive wheel to the other 11, 12 without squeezing. The distancebetween the compensating roller 13 and the roller axis 26 of the drivewheels 11, 12 is adjustable. However, it remains constant duringoperation in order to leave the loop length equal.

The frame 2 is preferably designed as a mount-like frame and rests withfour vertically adjustable frame feet 27 on the substrate. In addition,two or more removable transport wheels 40 with pin guide 37 may bepresent (compare FIG. 9). Special fixing on the substrate isunnecessary. The frame 2 is designed for the upright arrangement of thecable saw 1. The roller axes 26 extend in parallel to the substructureof the frame or to the substrate. As a result, the sawing cable 3circulates essentially in a vertical plane. This arrangement is shown inFIGS. 4 through 7, which will be described in greater detail below.

The cable saw 1 has a cable inlet 4, which is preferably arranged at thebottom, and a cable outlet 5 arranged at the top on the frame 2. As analternative, the arrangement may also be transposed. The cable inlet 4and the cable outlet 5 comprise an inlet roller 15 and an outlet roller16 each, which are mounted freely rotatably. The rollers 15, 16 arecarried by a bent bearing arm, which is in turn mounted freely rotatablyaround a pivot axis 17 or a drag bearing on the frame 2. The dragbearing 17 can be locked with a suitable locking mechanism 28 in theselected pivoted position. FIGS. 1 and 8 show alternative positions bythin broken lines. The drag bearings 17 are designed as hollow axles,through which the sawing cable 3 is led. The hollow axles prevent thesawing cable 3 from whipping freely in case of a break.

One of the two pivot axes 17, preferably that of the cable inlet 4,preferably extends in parallel to the longitudinal axis 18 of the saw.The other pivot axis 17, preferably that of the cable outlet 5, extends,by contrast, obliquely in a vertical plane in relation to thelongitudinal axis 18 of the saw. The cable outlet 5 is bent obliquely tothe outside as a result. This oblique position is more favorable for thekinematics of the cable than the parallel arrangement of both pivot axes17.

As is further illustrated especially by FIG. 3, the cable inlet 4 andthe cable outlet 5 are arranged laterally offset in the horizontaldirection in relation to one another. The cable inlet 4 is locatedcloser to the vertical brace of the frame 2 than the cable outlet 5.Moreover, the cable inlet 4 is located in a common vertical plane withthe inner drive wheel 12. The cable outlet 5 is located in a commonvertical plane with the outer drive wheel 11.

The oblique arrangement of at least one of the two pivot axes 17 of thecable inlet 4 or the cable outlet 5 is also present in the variantaccording to FIG. 8. The lateral offset of the inlet and outlet rollers15, 16 may also be present here. However, the rollers 15, 16 may also belocated at the same level and preferably in the same vertical plane asthe two drive wheels 11, 12.

In both exemplary embodiments, the cable storage unit 6 comprises atleast one stationary deflecting roller 19 and a plurality of deflectingrollers 20, 21, 22 that can be moved to and fro in the direction of thehorizontal longitudinal axis 18 of the saw. The latter deflectingrollers are preferably arranged on a yoke 23, which is mounted movablyon a horizontal guide 24 and is moved forward and backward by a storageunit drive 25. The cover plate 41 shown in FIGS. 9 and 10, which isfastened in the frame 2 and has movement slots for the axles of thedeflecting rollers 20, 21, 22, may be arranged between the yoke 23 withthe guide 24 and the deflecting rollers 20, 21, 22. The cover plate 41and the movement slots may have protective functions and optionally alsoguide functions for the deflecting rollers 20, 21, 22. A detachableprotective cover not shown), which covers the entire lateral surface ofthe frame 2 together with the sawing cable guide and leaves open onlythe cable inlet 4 and the cable outlet 5, may also be arranged on theoutside above the drive wheels 11, 12 and the deflecting rollers 19, 20,21, 22.

The storage unit drive 25 may have any desired design. In the preferredexemplary embodiment, it is a pneumatic cylinder without a piston rod.The cable storage unit 6 takes up the free cable length, which increasescorresponding to the depth of cut, and buffers same. As a result, thesawing cable 3 does not need to be shortened despite the increasingdepth of cut. The storage unit drive 25 keeps under tension the sawingcable 3 laid in a plurality of loops between the movable deflectingrollers 20, 21, 22 and the stationary deflecting roller or rollers 19and the drive wheels 11, 12 and buffers possible vibrations.

A stationary roller arrangement 19 is arranged close to the cable inlet4 in the embodiments shown. It comprises a one-piece double roller withtwo guide grooves 29, 30 arranged one on top of another in the axialdirection. The inner guide groove 30 is located closer to the frame 2than the outer guide groove 29. As an alternative, two individual wheelsmay also be present, which are rigidly connected to one another, likethe guide grooves 29, 30, or are separate and freely rotatable.

The deflecting roller 19 is arranged between the cable inlet 4 and thedrive wheels 11, 12. According to FIG. 3, its inner groove 30 is locatedin the same vertical plane as the guide groove of the inlet roller 15and the inner drive wheel 12. The outer guide groove 29 of thedeflecting roller 19 is located, by contrast, in the same vertical planeas the guide groove of the outlet roller 16 and the outer drive wheel11. No stationary deflecting roller arrangement is present at the cableoutlet 5 in the preferred embodiment. This may also be different in avariant, which is not shown.

In the exemplary embodiment shown in FIGS. 1 through 3, the yoke 23extending at right angles to the guide 24 carries two deflecting rollerarrangements 20, 21, which are arranged next to one another at spacedlocations at right angles to the longitudinal axis 18 of the saw and aredesigned as double rollers with two guide grooves 29, 30 each. Thedesign and the groove arrangement are the same as in the case of thestationary deflecting roller 19.

Especially the outer guide groove 29 of the deflecting roller is alignedwith the outlet roller 16 and the outer drive wheel 11. Otherwise, theinner and outer guide grooves 29, 30 of the deflecting rollers 19, 20,21 are in the same vertical plane and cable plane.

In the design variant according to FIG. 8, a single deflecting roller 22may be present instead of the upper double roller 21. The roller axes 26of all deflecting rollers 19, 20, 21, 22 extend in parallel to oneanother and to the axis of the drive wheels 11, 12.

The total number of the individual guide grooves 29, 30 of the movabledeflecting rollers 20, 21, 22 is smaller than or equal to the totalnumber of drive wheels 11, 12 and optionally of the compensating roller13 as well as the guide grooves 29, 30 of the stationary deflectingrollers 19 in both embodiments. Two movable deflecting rollers 20, 21and four movable guide grooves 29,30, which cooperate with fourstationary wheels 11, 12, 13, 19 with five guide grooves 29, 30, arepresent in FIGS. 1 through 3. In FIG. 8, there are four guide grooves29, 30 of the stationary rollers or wheels 11, 12, 19 for the threeguide grooves 29, 30 of the movable deflecting rollers 21, 22.

FIGS. 4 through 7 illustrate various possibilities of arranging thesawing cable 3 on a cable saw 1 from FIGS. 1 through 3. The differentcable strands or cable sections can cross one another because of thedifferent height of the grooves. To better illustrate the guiding of thecable, the guide grooves 29, 30 of the double rollers 19, 20, 21 areshown with different diameters. The larger diameter represents the guidegroove 30 located inside in relation to the frame 2 and the smallerdiameter represents the outer guide groove 29.

In the first variant according to FIG. 4, the sawing cable 3 is firstled to the cable inlet 4 onto the inner guide groove 30 of thestationary double roller 19 and from there onto the inner drive wheel12. The sawing cable 3 then runs to the outer drive wheel 11 via theoblique compensating roller 13 and goes from here to the cable outlet 5via the outer guide groove 29 of the deflecting roller 21. Thedeflecting roller 20 does not guide the cable here. The cable storageunit 6 contains two cable strands in this embodiment due to the simpledeflection at the roller 21.

In the variant according to FIG. 5, the cable storage unit 6 has fourcable strands. Unlike in FIG. 4, the sawing cable 3 is led here from theinner guide groove 30 of the stationary deflecting roller 19 to theinner guide groove 30 of the movable deflecting roller 21 and from herefarther to the inner drive wheel 12. After running over the compensatingroller and the outer drive wheel 11, the sawing cable 3 runs to theouter guide groove 29 of the deflecting roller 21 and from here thecable outlet 5.

FIG. 6 shows another variant with six cable strands with the involvementof the deflecting roller 20. The arriving sawing cable 3 is first ledover the inner guide groove 30 of the movable deflecting roller 20 tothe inner guide groove 30 of the stationary deflecting roller 19 andfrom here to the inner guide groove 30 of the second movable deflectingroller 21. From this, the sawing cable 3 runs to the outer groove 29 ofthe movable deflecting roller 21 and from here to the cable outlet 5over the inner drive wheel 12, the compensating roller 13 and the outerdrive wheel 11 analogously to FIG. 5.

The variant according to FIG. 7 has the maximum storage capacity witheight cable strands. The guiding of the cable from the cable inlet 4 tothe inner guide groove 30 of the stationary deflecting roller 19 is thesame as in FIG. 6. Unlike in FIG. 6, the sawing cable 3 is then returnedfrom the inner guide groove 30 of the stationary deflecting roller 19first to the outer guide groove 29 of the movable deflecting roller 20and it runs from here to the inner guide groove 30 of the movabledeflecting roller 21 over the outer guide groove 29 of the stationarydeflecting roller 19. From here on, the guiding of the cable is againthe same as in FIG. 6.

FIG. 8 also shows a possible variant of guiding the cable. The sawingcable 3 is led from the cable inlet 4 in a common vertical plane firstover the movable deflecting roller 21 to the stationary deflectingroller 19 and from here farther over the second movable deflectingroller 22 to the two drive wheels 11, 12, from which the sawing cable 3runs directly to the cable outlet 5. The two deflecting rollers 19, 21are designed as double rollers, so that the sawing cable can still beled over the two rollers 19, 21 in an additional loop before thedeflecting roller 22 in a variant which is not shown.

FIGS. 9 and 10 show two more design variants of the cable saw 1, whichcan be taken apart into a plurality of basic components in theseexemplary embodiments. One basic component is formed by a main rollerhead 34, which is fastened to the frame 2 by means of a pin guide 37 anda suitable fastening 38, e.g., an eccentric screw. The main roller headcomprises a carrier frame, on which at least the stationary deflectingroller 19 and the cable inlet 4 as well as the cable outlet 5 with thecorresponding rollers 15, 16 are arranged. In the embodiment shown inFIG. 9, the main roller head 34 also carries the gear 9 and the drivewheels 11, 12 as well as the compensating roller 13, which may beoptionally present.

The second basic component is formed by the motor unit 3 6, whichcomprises the motor 8 and the change-over coupling 10 in this exemplaryembodiment. The third basic component is formed by a frame unit 35,which comprises the cable storage unit 6 with the storage unit drive 25and the movable deflecting rollers 20, 21 or, as an alternative, alsothe deflecting roller 22. In this breakdown into components, the mainroller head 34 and the motor unit 36 have about the same weight andtogether have approximately the same weight as the frame unit 35.

In a variant of FIG. 9, which is not shown, it is possible to associatethe gear 9 with the motor unit 10 and to flange it directly on the motor8. The change-over coupling 10 is now between the gear 9 and the drivewheels 11, 12 at the main roller head 34.

FIG. 10 shows a perspective view of the cable saw 1 from the rear side.The drive wheels 11, 12 are associated with the motor unit 36 in thisembodiment. In this case, the motor 8 forms a so-called drive unit 39with the gear 9 and the drive wheels 11, 12, and this drive unit can bedetachably connected to the main roller head 34. A change-over coupling10 may again be optionally present between the motor 8 and the gear 9and/or between the gear 9 and the drive wheels 11, so that the driveunit 39 can be taken apart even more. The main roller head 34 comprisesonly the deflecting roller 19, the cable inlet 4, the cable outlet 5 andoptionally the compensating roller 13 in the variant of FIG. 10.

In the attached position, the main roller head 34 complements the frame2 on the front side of the saw and forms the front closure of the frame.The connection is self-securing due to the pin guides 37 and the pull ofthe sawing cable 3 and of the storage unit drive 25. The eccentric screw38 now needs to take up only the clearance from the pin guide 37.

The removable motor 8 or the motor unit 36 may also be used inconnection with other tool machines not shown and replaced between thedifferent machines. These are preferably other types of tool machinesfor processing stones, concrete and similar materials. The cable saw 1with the frame unit 35 and optionally the main roller head 34 isdesigned as a driveless skeleton machine in this case. The other toolmachines may also be designed as skeleton machines in a similar manner.A motor 8 or a motor unit 36, which are attached to operate the skeletonmachines when needed, is now sufficient for these skeleton machines. Tomake it possible to combine the motor 8 or the motor unit 36 with thedifferent skeleton machines and their different kinematics and driverequirements, the motor 8 has a correspondingly broadly dimensionedcontrol or regulation, which makes possible an optimal adaptation to thenecessary torque or speed curves.

Various modifications of the embodiments shown are possible. On the onehand, the design embodiment of the drive 7 can be varied within theframework of the present invention as desired. Furthermore, the cablestorage unit 6 may also have different designs, and the number and thearrangement of the stationary and movable deflecting rollers may vary.Moreover, the number and the arrangement of the drive wheels 11, 12 maydiffer from the exemplary embodiments shown. In addition, the design andthe set-up of the frame 2 are variable as well. As an alternative, itmay be arranged horizontally or on edge. In the case of a horizontalarrangement, the plane in which the cable runs is essentiallyhorizontal. However, the essentially vertical plane in which the cableruns in the exemplary embodiments has kinematic advantages.

While specific embodiments of the invention have been shown anddescribed in detail to illustrate the application of the principles ofthe invention, it will be understood that the invention may be embodiedotherwise without departing from such principles.

What is claimed is:
 1. A cable saw, comprising: a frame; a motor drivewith a plurality of said adjacent drive wheels; a cable storage unit; atleast one stationary deflecting roller connected to said storage unit; aplurality of movable deflecting rollers connected to said storage unit;an endless sawing cable guided by to said stationary deflecting rollerand guided by said plurality of movable deflecting rollers and driven ina circulating manner, said sawing cable being wound around saidplurality of adjacent drive wheels with said adjacent drive wheels beingdriven together by said motor.
 2. A cable saw in accordance with claim1, wherein said drive wheels are arranged with a common stationary axleone on top of another and are driven in a same direction.
 3. A cable sawin accordance with claim 2, further comprising: a compensating rollerarranged adjacent to said drive wheels.
 4. A cable saw in accordancewith claim 1, wherein said drive has a change-over coupling.
 5. A cablesaw in accordance with claim 4, further comprising: a gear arranged infront of said drive wheels, said change-over coupling being arrangedbetween said motor and said gear.
 6. A cable saw in accordance withclaim 1, wherein said stationary deflecting roller and said plurality ofmovable deflecting rollers are freely rotatable double rollers arrangedcoaxially one on top of another with a plurality of guide grooves.
 7. Acable saw in accordance with claim 6, further comprising: a compensatingroller arranged adjacent to said drive wheels, a number of guide groovesof said movable deflecting rollers is smaller than or equal to the totalnumber of drive wheels and a number of guide grooves of said stationarydeflecting roller and said compensating roller.
 8. A cable saw inaccordance with claim 1, wherein said cable storage unit has a storageunit drive with a pneumatic cylinder without piston rod.
 9. A cable sawin accordance with claim 1, wherein the cable saw has a cable inlet anda cable outlet equipped with pivotable rollers, wherein at least one ofsaid cable inlet and said cable outlet has an oblique pivot axis.
 10. Acable saw in accordance with claim 9, wherein said inlet and outletrollers are arranged offset in relation to one another in a direction ofa roller axle.
 11. A cable saw in accordance with claim 9, furthercomprising: a main roller head which is detachable from said frame, saidstationary deflecting roller, said inlet and outlet rollers and saiddrive wheels being arranged on said main roller head.
 12. A cable saw inaccordance with claim 1, wherein said drive and said drive wheels areconnected to form a drive unit, said drive unit being detachablyconnected to said frame or said main roller head.